CEL P204B??

[Randy_270]

My truck threw a CEL a while back and I had our local auto shop, i live three hours away from the nearest ford dealership, in town do a scan and they said it was a P204B, which is a Reductant Pressure Sensor Circuit Range/Performance, as the main code but because of that code they also found a P20BA(Reductant Heater A Control Performance) and a P20B9(Reductant Heater A Control Circuit/Open) and the auto shop here hasnt done enough work on newer diesels to know what those meant so Im just wondering if anyone knows what makes those codes come up?? Im about to go on a trip towing about 5-6K and I dont want the truck to just die on me and my girlfriend when we have no cell service for the first three hours of our trip and its supposed to be quite cold out (-20 to -30C). Thanks in advance.